Abstract: This paper presents a safety management platform of coal mine based on KJ251A personnel location system which takes underground personnel location system as the core, and fuses and shares different information including personnel location information, the unique daily attendance, the validation of safety operation certificate, the management of portable gas detector, the restricted area / entrance monitoring and so on. The effective integration of all kinds of safety information and the establishment of a complete safety information management platform give full play to the role of information in the coal mine accident prevention and ensure the safe production of coal mining enterprises.